├── package.json
├── mark.js
├── multiplication.js
├── sumofodd.js
├── numtrianlge.js
├── assig.js
├── constfun.js
├── numpattern2.js
├── evencount.js
├── myfilter.js
├── palindrome.js
├── primecheck.js
├── grade.js
├── reverse.js
├── descending.js
├── throwerr.js
├── gradescore.js
├── swaparray.js
├── function.js
├── incometax.js
├── adjacentmulti.js
├── dateswitch.js
├── 2darray.js
├── oops2d.js
├── bookstatus.js
├── addarray.js
├── 4function.js
└── classarea.js


/package.json:
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1 | {
2 |   "dependencies": {
3 |     "readline-sync": "^1.4.10"
4 |   }
5 | }
6 | 


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/mark.js:
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 1 | var mark=require('readline-sync')
 2 | 
 3 | var m=mark.question('Enter the mark in 100')
 4 | 
 5 | if(m>=50){
 6 |     console.log('You have passed')
 7 | }else{
 8 |     console.log('You have failed')
 9 | }
10 | 
11 | 


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/multiplication.js:
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1 | var multiply=require('readline-sync')
2 | 
3 | var num=multiply.question('Eneter the number you want  to get multiplication table')
4 | 
5 | for(var i=1;i<=10;i++){
6 |     multi=i*num
7 | 
8 |     console.log(i+'x'+num+'='+multi)
9 | }


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/sumofodd.js:
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1 | var oddsum=require('readline-sync')
2 | 
3 | var limit=oddsum.question('Enter a limit')
4 | var sum=0;
5 | for(i=1;i<=limit;i++){
6 |     if(i%2!=0){
7 |         sum=sum+i
8 |     }}
9 | console.log('Sum of all odd numbers in limit is'+sum)


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/numtrianlge.js:
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 1 | var pattern=require('readline-sync')
 2 | 
 3 | var  limit=pattern.question('Enter a limit')
 4 | var k=''
 5 | for(var i=1;i<limit;i++){
 6 |     for(var j=1;j<=i;j++){
 7 |     
 8 |     k=k+j;
 9 |     }console.log(k)
10 | k=''
11 | }
12 | 


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/assig.js:
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1 | var read=require('readline-sync')
2 | 
3 | var P=parseInt(read.question('Enter Prime amount'))
4 | var  R=parseFloat (read.question('Enter Interest Rate'))
5 | var n=parseFloat(read.question('Enter the number of Years'))
6 | var     SI=(P*R*n)/100
7 | 
8 | console.log(SI) 


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/constfun.js:
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 1 | class Car {
 2 |     constructor(name, mileage, max_speed) {
 3 |         this.name = name;
 4 |         this.mileage = mileage;
 5 |         this.max_speed = max_speed;
 6 |     }
 7 | }
 8 | 
 9 | let maruthi = new Car("swift", 20, 120);
10 | console.log(maruthi);


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/numpattern2.js:
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 1 | let someText = require("readline-sync")
 2 | let rowsIn = someText.question("Enter how many rows: ")
 3 | let rows = parseInt(rowsIn)
 4 | let k = 0;
 5 | 
 6 | for (let i = 0; i < rows; i++) {
 7 |     for (let j = 0; j <= i; j++) {
 8 |         k++
 9 |         process.stdout.write(k + " ")
10 |     }
11 |     console.log()
12 | }


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/evencount.js:
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 1 | var even=require('readline-sync')
 2 | var limit=even.question('Enter the limit')
 3 | 
 4 | var array=[]
 5 | var count=0
 6 | 
 7 | console.log('Enter values to Array')
 8 | for(i=0;i<limit;i++){
 9 |     array[i]=even.question()}
10 | 
11 |     for(i=0;i<limit;i++){
12 | if(array[i]%2===0){
13 |     count=count+1
14 | }}
15 | console.log('The occurance of even numbers in array '+ count)
16 | 


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/myfilter.js:
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 1 | const filter = require("readline-sync")
 2 | 
 3 | var myArray=[1,2,3,4,5]
 4 | var s = 0
 5 | 
 6 | function myFilter(a, b){
 7 | 
 8 |     console.log("sum is "+s)
 9 |     console.log(b)
10 | }
11 | function callback(a)
12 | {
13 | 
14 |     for(let i=0;i<myArray.length;i++)
15 |     {   
16 |         s+=a[i]
17 |     }
18 |     if(s%2==0)
19 |     {return true}
20 |     else
21 |     {return false}
22 | 
23 | }
24 | myFilter(myArray,callback(myArray))


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/palindrome.js:
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 1 | var palindrome=require('readline-sync')
 2 | 
 3 | console.log('Enter a word')
 4 | var word=palindrome.question()
 5 | 
 6 | var flag=0
 7 | var len=word.length
 8 | for(i=0;i<len;i++){
 9 |     if(word[i]!==word[len-1-i])
10 |     {
11 |         flag=1
12 |         break
13 |     }
14 | 
15 | }
16 | if(flag==1){
17 |         console.log('Word is not a Palindrome')
18 |     }
19 | 
20 | else{
21 |     console.log('Word is a Palindrome')
22 | 
23 | }
24 | 


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/primecheck.js:
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 1 | let someText = require("readline-sync")
 2 | let number = someText.question("Enter a number: ")
 3 | 
 4 | 
 5 | let flag = true;
 6 | for (let i = 2; i <= number / 2; i++) {
 7 |        if(number % i === 0) {
 8 |         flag = false
 9 |         break
10 |     }
11 |     
12 | }
13 | 
14 | 
15 | if (flag === false ) {
16 |     console.log(number + " is not a prime number.")
17 | } else {
18 |     console.log (number + " is a prime number.")
19 | }
20 | 
21 | 


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/grade.js:
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 1 | var grade=require('readline-sync')
 2 | 
 3 | var mark=grade.question('Enter the total mark')
 4 | 
 5 | if(mark>=90){
 6 |     console.log('Grade A')
 7 | }else if(mark>=80 && mark<=89){
 8 |     console.log('Grade B')
 9 | }else if( mark>=70 && mark<=79){
10 |     console.log('Grade C')
11 | }else if(mark>=60 && mark<=69){
12 |     console.log('Grade D')
13 | }else if(mark>=50 && mark<=59){
14 |     console.log('Grade E')
15 | }else{
16 |     console.log('Failed')
17 | }
18 | 
19 | 


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/reverse.js:
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 1 | const reverse = require("readline-sync");
 2 | var myString
 3 | 
 4 | function str(){
 5 |     myString = reverse.question("enter the string");
 6 |     var string = myString.split('');
 7 |     console.log(string.reverse().join(''));
 8 | }
 9 | 
10 | try{
11 |    str();
12 | }
13 | catch{
14 | console.log("error"+myString+" is invalid")
15 | }
16 | finally{
17 |   if(isNaN(myString)){
18 |     console.log(typeof(myString))
19 |     }
20 | else{
21 |   console.log("number")
22 |   } 
23 | }


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/descending.js:
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 1 | var descend=require('readline-sync')
 2 | var limit=descend.question('Enter the limit')
 3 | 
 4 | var array=[]
 5 | 
 6 | console.log('Enter values to an Array')
 7 | for(k=0;k<limit;k++){
 8 |     array[k]=descend.question()
 9 | }
10 | var temp
11 | for(i=0;i<limit-1;i++){
12 |     for(j=i+1;j<limit;j++){
13 |         if(array[i]<array[j]){
14 |         temp=array[i]
15 |         array[i]=array[j]
16 |         array[j]=temp}
17 |     }
18 | }
19 | console.log('After descending')
20 | console.log(array)


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/throwerr.js:
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 1 | var throwerr= require("readline-sync")
 2 | var nothing =throwerr.question("Enter your height")
 3 | var height = parseInt(nothing);
 4 | 
 5 | try {
 6 |     if( height >= 200 )
 7 |         throw "hugeHeightError";
 8 |    else if(( isNaN(height )))
 9 |         throw "not a number";
10 |    else if( height <= 40 )
11 |         throw "tinyHeightError";
12 |    else
13 |         throw "Valid";
14 | }
15 | 
16 | catch(err){
17 |     console.log(err)
18 | }
19 | 
20 | console.log("height is "+height)    


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/gradescore.js:
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 1 | let someText = require("readline-sync")
 2 | console.log("Enter the marks scored by the student: ")
 3 | let writtenIn = someText.question("Written test: ")
 4 | let writtenMark = parseInt(writtenIn)
 5 | let labIn = someText.question("Lab exams: ")
 6 | let labMark = parseInt(labIn)
 7 | let assignmentsIn = someText.question("Assignment marks: ")
 8 | let assignmentMark = parseInt(assignmentsIn)
 9 | 
10 | let grade = ((writtenMark * 70) / 100) + ((labMark * 20) / 100) + ((assignmentMark * 10) / 100)
11 | 
12 | console.log("Grade of the student is: " + grade + ".")


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/swaparray.js:
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 1 | var swap=require('readline-sync')
 2 | var limit=swap.question('Enter a limit')
 3 | 
 4 | var array1=[]
 5 | var array2=[]
 6 | var temp=0
 7 | 
 8 | console.log('Enter values to array 1')
 9 | for(var i=0;i<limit;i++){
10 |     array1[i]=swap.question()
11 | }
12 | console.log('Enter values to array 2')
13 | for(var j=0;j<limit;j++){
14 |     array2[j]=swap.question()
15 | }
16 | for(k=0;k<limit;k++){
17 | temp=array1[i]
18 | array1[i]=array2[j]
19 | array2[j]=temp}
20 | 
21 | console.log('After swapping')
22 | console.log(array1)
23 | console.log(array2)


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/function.js:
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 1 | let someText = require("readline-sync")
 2 | let userIn = someText.question("Enter array limit: ")
 3 | let limit = parseInt(userIn)
 4 | 
 5 | let array = new Array(limit)
 6 | getArray(array)
 7 | displayArray(array)
 8 | 
 9 | function getArray(array) {
10 |     for (let i = 0; i < limit; i++) {
11 |         array[i] = someText.question("Enter element " + (i + 1) + ": ")
12 |     }
13 | }
14 | 
15 | function displayArray(array) {
16 |     process.stdout.write("The array is: ")
17 |     for (let i = 0; i < limit; i++) {
18 |         process.stdout.write(array[i] + "   ")
19 |     }
20 |     console.log()
21 | }


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/incometax.js:
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 1 | let someText = require("readline-sync")
 2 | let incomeIn = someText.question("Enter the annual income: ")
 3 | let income = parseInt(incomeIn)
 4 | 
 5 | if (income < 250000 ) {
 6 |     console.log("No tax to be paid.")
 7 | } else if (250000 <= income < 500000) {
 8 |     let tax = (5 * income) / 100
 9 |     console.log("Income tax amount: " + tax + ".")
10 | } else if (500000 <= income < 1000000) {
11 |     let tax = (20 * income) / 100
12 |     console.log("Income tax amount: " + tax + ".")
13 | } else if (1000000 <= income < 5000000) {
14 |     let tax = (30 * income) / 100
15 |     console.log("Income tax amount: " + tax + ".")
16 | }


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/adjacentmulti.js:
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 1 | let someText = require("readline-sync")
 2 | let userIn = someText.question("Enter the array limit: ")
 3 | let limit = parseInt(userIn)
 4 | 
 5 | let arrayIn = new Array(limit)
 6 | let arrayOut = new Array(limit - 1)
 7 | 
 8 | console.log("Enter the elements to array: ")
 9 | for (let i = 0; i < limit; i++) {
10 |     arrayIn[i] = someText.question("Enter element " + i + ": ")
11 | }
12 | 
13 | for (let i = 0; i < limit - 1; i++) {
14 |     arrayOut[i] = parseInt(arrayIn[i]) * parseInt(arrayIn[i + 1])
15 | }
16 | 
17 | console.log("The output array is: ")
18 | for (let i = 0; i < limit - 1; i++) {
19 |     process.stdout.write(arrayOut[i] + "    ")
20 | }


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/dateswitch.js:
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 1 | var date=require('readline-sync')
 2 | 
 3 | var choice=date.question('Select : 1 For Sunday\n 2 for Monday\n 3 for Tuesday\n 4 for Wednesday\n 5 for Thursday\n 6 for Friday\n 7 for Saturday')
 4 | switch(choice){
 5 |     case "1":
 6 |         console.log('You have selected Sunday')
 7 |         break;
 8 |     case "2":
 9 |         console.log('You have selected Monday')
10 |         break;
11 |     case "3":
12 |         console.log('You have selected Tuesday')
13 |         break;
14 |     case "4":
15 |         console.log('You have selected Wednesday')
16 |         break;
17 |     case "5":
18 |         console.log('You have selected Thursday')
19 |         break;
20 |     case "6":
21 |         console.log('You have selected Friday')
22 |         break;
23 |     case "7":
24 |         console.log('You have selected Saturday')
25 |         break;
26 |     default:
27 |         console.log('Invalid Entry')
28 | }


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/2darray.js:
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 1 | var twod = require('readline-sync')
 2 | 
 3 | var limit = twod.question('Enter the size of Array')
 4 | var array1 = []
 5 | var array2 = []
 6 | var sumarray = []
 7 | 
 8 | console.log('Enter the values to Array 1')
 9 | for (var i = 0; i < limit; i++) {
10 |     array1[i] = []
11 |     for (var j = 0; j < limit; j++) {
12 |         array1[i][j] = twod.question()
13 |     }
14 | }console.log(array1)
15 | console.log('Enter the values of Array 2')
16 | for (var i = 0; i < limit; i++) {
17 |     array2[i] = []
18 |     for (var j = 0; j < limit; j++) {
19 |         array2[i][j] = twod.question()
20 |     }
21 | }console.log(array2)
22 | console.log('Sum of 2 Arrays')
23 | for (var i = 0; i < limit; i++) {
24 |     sumarray[i] = []
25 |     for (var j = 0; j < limit; j++) {
26 |         sumarray[i][j] = parseInt(array1[i][j]) + parseInt(array2[i][j])
27 |     }
28 | }console.log(sumarray)
29 | 
30 | 
31 | 
32 | 
33 | 


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/oops2d.js:
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 1 | 
 2 | 
 3 | class getClass {
 4 | 
 5 |     getArray(limit) {
 6 |         let someText = require("readline-sync")
 7 |         let array = []
 8 |         for (let i = 0; i < limit; i++) {
 9 |             array[i] = []
10 |         }
11 | 
12 |         for (let i = 0; i < limit; i++) {
13 |             for (let j = 0; j < limit; j++) {
14 |                 array[i][j] = someText.question("Enter element (" + i + ", " + j + "): ")
15 |             }
16 |         }
17 |         return array
18 |     }
19 | 
20 |     displayArray(limit, arrayStore) {
21 |         for (let i = 0; i < limit; i++) {
22 |             for(let j = 0; j < limit; j++) {
23 |                 process.stdout.write(arrayStore[i][j] + "    ")
24 |             }
25 |            console.log()
26 |         }
27 |     }
28 | }
29 | 
30 | let someText = require("readline-sync")
31 | let userIn = someText.question("Enter the size of array: ")
32 | let limit = parseInt(userIn)
33 | 
34 | const o1 = new getClass()
35 | let arrayStore = o1.getArray(limit)
36 | o1.displayArray(limit, arrayStore)


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/bookstatus.js:
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 1 | var library = [
 2 |     {
 3 |      title: 'Bill Gates',
 4 |      author: 'The Road Ahead',
 5 |      readingStatus: true  
 6 |     },
 7 | 
 8 |     {
 9 |       title: 'Steve Jobs',
10 |       author: 'Walter Isaacson',
11 |       readingStatus: true  
12 |      },
13 | 
14 |      {
15 |       title: 'Mockingjay: The Final Book of The Hunger Games',
16 |       author: 'Suzanne Collins',
17 |       readingStatus: false  
18 |      }
19 | ]
20 | 
21 | const book = require("readline-sync")
22 | var option = book.question("Enter a option 1, 2, 3:  ")
23 | 
24 | if(option == 1){
25 |   if(library[0].readingStatus){
26 |       console.log(`Alredy read '${library[0].title}' by '${library[0].author}'`);
27 |   }else{
28 |     console.log(`You still need to read '${library[0].title}' by '${library[0].author}'`);
29 |   }
30 | }
31 | 
32 | if(option == 2){
33 | if(library[1].readingStatus){
34 |   console.log(`Alredy read '${library[1].title}' by '${library[1].author}'`);
35 | }else{
36 | console.log(`You still need to read '${library[1].title}' by '${library[1].author}'`);
37 | }
38 | }
39 | 
40 | if(option == 3){
41 | if(library[2].readingStatus){
42 |   console.log(`Alredy read '${library[2].title}' by '${library[2].author}'`);
43 | }else{
44 | console.log(`You still need to read '${library[2].title}' by '${library[2].author}'`);
45 | }
46 | }
47 | 


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/addarray.js:
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 1 | let someText = require("readline-sync")
 2 | let userIn = someText.question("Enter the size of array: ")
 3 | let size = parseInt(userIn)
 4 | let array1 = [], array2 = [], sumArray= [];
 5 | 
 6 | for (let i = 0; i < size; i++) {
 7 |     array1[i] = []
 8 |     array2[i] = []
 9 |     sumArray[i] = []
10 | }
11 | 
12 | getArray(array1, array2, size)
13 | addArray(array1, array2, size, sumArray)
14 | displayArray(sumArray,size)
15 | 
16 | function getArray(array1, array2, size) {
17 |     console.log("Enter elements to array 1: ")
18 |     for (let i = 0; i < size; i++) {
19 |         for (let j = 0; j < size; j++) {
20 |             array1[i][j] = someText.question("Enter element (" + i + ", " + j + "): ")
21 |         }
22 |     }
23 |     console.log("Enter elements to array 2: ")
24 |     for (let i = 0; i < size; i++) {
25 |         for (let j = 0; j < size; j++) {
26 |             array2[i][j] = someText.question("Enter element (" + i + ", " + j + "): ")
27 |         }
28 |     }
29 | }
30 | 
31 | 
32 | function addArray(array1, array2, size, sumArray) {
33 |     for (let i = 0; i < size; i++) {
34 |         for (let j = 0; j < size; j++) {
35 |             sumArray[i][j] = parseInt(array1[i][j]) + parseInt(array2[i][j])
36 |         }
37 |     }
38 | }
39 | 
40 | function displayArray(sumArray, size) {
41 |     console.log("Sum of array 1 and array 2 is : ")
42 |     for (let i = 0; i < size; i++) {
43 |         for(let j = 0; j < size; j++) {
44 |             process.stdout.write(sumArray[i][j] + "     ")
45 |         }
46 |     }
47 | }
48 | console.log()


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/4function.js:
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 1 | 
 2 |     let someText = require("readline-sync")
 3 | 
 4 |     console.log("choose 1 for addition.")
 5 |     console.log("choose 2 for subtraction.")
 6 |     console.log("choose 3 for multiplication.")
 7 |     console.log("choose 4 for division.")
 8 | 
 9 |     let userSelect = someText.question("Enter your choice: ")
10 |     // let input = parseInt(userSelect)
11 | 
12 |     switch(userSelect) {
13 |     case 1:
14 |         addition()
15 |         break
16 |     case 2:
17 |         subtraction()
18 |         break
19 |     case 3:
20 |         multiplication()
21 |         break
22 |     case 4:
23 |         division()
24 |         break
25 |     default:
26 |         console.log("Wrong choice.")
27 |         break
28 |     }
29 | 
30 | 
31 | 
32 | function addition () {
33 |     let num1 = someText.question("Enter number 1: ")
34 |     let num2 = someText.question("Enter number 2: ")
35 |     let result = num1 + num2
36 |     console.log ("The sum of " + result )
37 | }
38 | function subtraction () {
39 |     let num1 = someText.question("Enter number 1: ")
40 |     let num2 = someText.question("Enter number 2: ")
41 |     let result = num1 - num2
42 |     console.log ("The sum of " + result )
43 | }
44 | function multiplication () {
45 |     let num1 = someText.question("Enter number 1: ")
46 |     let num2 = someText.question("Enter number 2: ")
47 |     let result = num1 * num2
48 |     console.log ("The sum of " + result )
49 | }
50 | function division () {
51 |     let num1 = someText.question("Enter number 1: ")
52 |     let num2 = someText.question("Enter number 2: ")
53 |     let result = num1 / num2
54 |     console.log ("The sum of " + result )
55 | }


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/classarea.js:
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 1 | class Area {
 2 |     circle(radius) {
 3 |         let area = 3.14 * radius * radius
 4 |         console.log("The area for the given circle with radius " + radius + " is: " + area)
 5 |     }
 6 | 
 7 |     square(side) {
 8 |         let area = side * side
 9 |         console.log("The area for the given square with side " + side + " is: " + area)
10 |     }
11 | 
12 |     rectangle(length, breadth) {
13 |         let area = length * breadth
14 |         console.log("The area for the given rectangle with length " + length + " and breadth " + breadth + " is: " + area)
15 |     }
16 | 
17 |     triangle(base, height) {
18 |         let area = 0.5 * base * height
19 |         console.log("The area for the given triangle with base " + base + " and height " + height + " is: " + area)
20 | 
21 |     }
22 | }
23 | 
24 | class MyClass extends Area {
25 | 
26 |     circle() {
27 |         let someText = require("readline-sync")
28 |         let userIn = someText.question("Enter the radius for circle: ")
29 |         let radius = parseInt(userIn)
30 |         return radius
31 |     }
32 | 
33 |     square() {
34 |         let someText = require("readline-sync")
35 |         let userIn = someText.question("Enter the side for the square: ")
36 |         let side = parseInt(userIn)
37 |         return side
38 |     }
39 | 
40 |     rectangle() {
41 |         let someText = require("readline-sync")
42 |         let userInLength = someText.question("Enter the length of the rectangle: ")
43 |         let userInBreadth = someText.question("Enter the breadth of the rectangle: ")
44 |         let length = parseInt(userInLength)
45 |         let breadth = parseInt(userInBreadth)
46 |         return [length, breadth]
47 |     }
48 | 
49 |     triangle() {
50 |         let someText = require("readline-sync")
51 |         let userInBase = someText.question("Enter the base of triangele: ")
52 |         let userInHeight = someText.question("Enter the height of triangle: ")
53 |         let base = parseInt(userInBase)
54 |         let height = parseInt(userInHeight)
55 |         return [base, height]
56 |     }
57 |     
58 |    constructor (choice) {
59 |         super()
60 |         switch (choice) {
61 |             case 1:
62 |                 console.log("You have chosen circle.")
63 |                 let radius = (this.circle())
64 |                 super.circle(radius)
65 |                 break
66 |             case 2:
67 |                 console.log("You have chosen square.")
68 |                 let side = (this.square())
69 |                 super.square(side)
70 |                 break
71 |             case 3:
72 |                 console.log("You have chosen rectangle.")
73 |                 const [length, breadth] = (this.rectangle())
74 |                 super.rectangle(length, breadth)
75 |                 break
76 |             case 4:
77 |                 console.log("You have chosen triangle.")
78 |                 const [base, height] = (this.triangle())
79 |                 super.triangle(base, height)
80 |                 break
81 |             default:
82 |                 console.log("Wrong choice.")
83 |         }
84 |     }
85 | }
86 | 
87 | let someText = require("readline-sync")
88 | console.log("Enter 1 for Circle")
89 | console.log("Enter 2 for square")
90 | console.log("Enter 3 for rectangle")
91 | console.log("Enter 4 for triangle")
92 | let userIn = someText.question("Enter your choice: ")
93 | let choice = parseInt(userIn)
94 | 
95 | const object = new MyClass(choice)
96 | 


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